Engine



Feb. 24, 1931. H. E. CURTIS 1,793,841

ENGINE Fild Jan. 5, 1929 FIG uzzzz' 2 I VE/VTOR Patented Feb. 24, 1931 [TE/D ",ST'IATE'S nivemn of an engine may be regulated accordingto the amount of fuel used, the heat developed by the engine being proportioned," ot'course,

tothe fuel flow. I

It is another object of the invention to proyideanieans of theflcharacter indicated that will be automatically adjusted to regulate the waterflow by theioperation of the engine.

It is still another object of the invention ,to provide 'a means of the character indicated so constructed and arranged that any desired fixed minimum amountfof water may be allowed to flow through the cooling system attimes little or rrojir'uel is being used and (mesqu te? amount heat is VW 1 1 rI A1,! I; i

R Y "'"i febi ti ie'ievemiea a .K 1:1. to eturnerimitate eec'o i 'n ical to h an l eqn t jt qi a; 1 9t vie ne refi ab ree va e enewe i l efiic eii'itin ts practical application, a. 09' Ifithdrtritin'gfi' i Figure lo Q. t. Li a H "gitudiil jal s ectionthrough a device, embodying my invention, partly in elevation and part broken away.

Figure 2 is a diagrammatical illustration 35 showing the device operatively mounted on an engine.

Referring now more particularly to the drawing, I show at 1 a formal representa- 'tion of an internal combustion engine, with i a water manifold at 2, a radiator at 3, conduits 4 and connecting the radiator with the engine, a water pump at 6, and a fuel intake manifold at 7 with the carbureter at 5 i-S and throttle valve at 9.

In carrying out my invention in the man ner herein disclosed, I provide an annular chamber as 10 in the conduit 4 with an annular opening 11 communicating with the mani t'old 2. An opening 12 is also formed in the Application filed January 3,

the ports 19 \vh 1929 Serial No. 330,095. a

top of the conduitin axial alignment with opening 11. i

Iii the side otthe conduit 4 is mounted a needle-valve 13 threaded through the wall otthe conduitat right angles to the axis of openin conduit asshownl y I A housing is shown at 14 in the form of a cylinder having an outwardly extending flange asl5 on its lower end to fit snugly in opening 11, and an inwardly extending flange to form a seat at 16. The intermediate s 11 and 12 andextending into the portion of thebylinder fits snugly in the opening 12" ancban outwardly extending flange 17 seats uponthe conduit at and is bolted thereto as at 18 thereby securing the cylinder or housinglain position. A man ber of ports 19 are formed in the wall of housing 14 inan annular row whereby comnumication is established between the com duit 4; and the interior of the housing. A

PATENT OFFICE HENRY E. CURTIS, or SAN JosE, CALIFORNIA single port as 20 is also formed ii the housy vi ,1 w r v V ,ing. 14 oif set a dlstancedrom the plane of with the manifold Q at 22pm; closed at its; other end as at 23. Thls member s provided with ports as 2% positioned to register with 7 en the member-is ongseat 16 as shown. a

A head 25 is mounte d on: the outer end the housing 14, and a spring 26 is inserted 5" between the head 25 and the valve 21 to nor; a mallyfliold it on the seat 16, Inserted be- A tween the head 25 and valve21 and enco n;

passingthespringQG a bellows 27, and; a

conduit 28 connects the chamber formedby the bellows with the, intake manifold 71 0f the engine.

Theresult of this construction A water flows freely from the manifold 2 into thee conduitgl and so to the radiator But it the suction inthe intake manifold 7 increases: and lowers the air pressure in the; bellowsQ/T to apoint'wliere' the spring Qdc'anno' longer maintain the valve 21 on its seat, then the mally the valve 21 is seated onthe, seat lfi and valve moves away from its seat and gradually closes the ports 19 and accordingly reduces the flow of water therethrough. If

i the suction becomesrgreat enough the ports 19 will be completely closed and then'the only water allowed to flow is the little that can make its way through the portQO and the sleeve port 24 registering therewith; Ordinarily but one adjustment of the needlevalve '13 is required, this adjustment being made'in accordance with the type of engine used and the work-it is called upon to do, although, of course it may be readily adjusted at any time if thought desirable. I i a An important feature of this invent'ion'is that it adjusts itself to secure the desired flow.

of water immediately preceding the development of the condition that requires the change of flow instead of afterwards as in the case of the thermostat, the adjustment for the water flow occurring immediately upon any adjustment of the throttle 9and prior to any temperature change in the engine.

The movement of the valve 21 through the action of bellows 27 is limited the stops .29 and 30. a i

'As an example of its mode of operation,

assume that the vehicleis climbing a hill with the throttle valve 9 wide open. Under this condition the sleeve valve 21 is in the position shown and the water is,-fiowing freely through the cooling systemlbe'cause the suction in the'bellows 27'is not sufficientto over; i come the spring action, practically all 'of the suction generated by the engine being utilized to induct fuel into the engine through the open throttle valve 9.' If.- now, the vehicle 7 passes over the top of the hilla'nd the throttle valve 9 is closed then theopposite condition occurs. That is the suction produced by the engine is effectivefto operate thebellows 27 and raise the valve 21 so as to close the increases the water flow increases prop'or-i tionately. 7 i

From the foregoing it may be clearly seen that by means of this construction the water flow is at all times and under all conditions properly proportioned to the fuel flow and is' therefore always adjusted prior to, the changed condition which render's'the change 1n water flow necessary; 7

It is to be understood, of course, that while I have herein shown and described but one specific embodiment ofthe invention, changes in form, construction and method of assembly and operation may be made within the scope of the appended claims.

Iclaim: 1. The combination with the water circulating system of an engine of a housing mounted in the system and having a port formed therein in the path of travelfof the water and a-second port'in offset relation to the first port, and a valve member mounted in the housing and provided with a port normally registering with'the first port but movable to close said first port and open the second port.

7 2. The combination with an engine having a fuel intake and a water circulating system, of ahousing mounted in the said system having a port formed therein in the path of travel of the Water and a secondport formed therein in offset relation to the first port, a

resiliently mounted valve member having a port formed therein normally registering w1th the first mentioned port, and suction actuated means connected to the intake to move the valve member against its resilient mounting to close the first mentioned port and open the second mentioned port.

3. The combination with an engine having a fuel intakeand a water circulating system,

of a housing mounted in the said system having a portformed thereinin the path of travel of the water and a secondport in offset'rela: tion to said first port, adjustable means for regulatingthe flow of water through the second port, a resiliently mounted valve member having a port formed therein normally registering wi th the first port and closing the second port, and suction actuated meansconnected to'the intake to move the valve member against itsresilient mounting to close the first port and open the second mentioned port.

The combination with an engine having v a fuel intake and a water circulating system, of a valve mounted in the said system and provided with normally open and closed ports, and suction actuated means connected to the intake and to the valve to close the open port and thenopen the closed port.

v HENRY E. CURTIS.- 

